Alexander dudgeon



'A. DUDG'EVON.

Steam Packing.

No. 232,011. Paten ted Sept. 7,1880.

TT T MPETERS, FHQYO-UTMOGRAPHEH, WXSHINGTON n C.

STATES PATENT OFFICE.

ALEXANDER DUDGEON, OF (JALEDONIAN ROAD, MIDDLESEX COUNTY, GREAT BRITAIN.

STEAM-PACKING.

SPECIFICATION forming part of Letters Patent No. 232,011, dated September '7, 1880.

Application filed March 12, 1879.

To all whom Lt may concern:

Be it known that I, ALEXANDER DUDGEON, of Caledonian Road, in the county of Middlesex, Kingdom of Great Britain and Ireland, have invented new and useful Improvements in the Manufacture of Packing for Parts of Steam-Engines and for other Uses, of which the following is a specification.

In order to produce an eflicient and a durable packing for parts of steam and other engines, &c., I use asbestos in sheets, formed in a similar manner to asbestuspaper, and I fix the said asbestus sheet in strips of suitable widths short distances apart on canvas made of cotton, flax, hemp, or other cloths, so that when the canvas is rolled up with a solution of india-rnbber a succession of bags is formed, wherein the sheets of asbestus are confined,

' thus preventing waste of asbestus, which cannot escape into the gland until the outside layer of canvas is worn through. Thus the successive layers of asbestus in the bags are successively brought into contact with the piston or other rod or moving part of the machine as the paekin g wears.

Packing as described may be steeped in a solution of silicate of soda, silicate of potash, stannate of soda, or other substances containing properties to resist the action of great heat, or in paraiiine or other lubricating substances.

The core consists of a strip of vulcanized india-rubber.

Referring to the accom pan yin g sheet of drawings, Figure 1 shows in plan, and Fig. 2

in section, a piece of canvas, a, onto which is fastened a core consisting of a strip of vulcanized india-rubber or of alternate strips I) I)", also a sheet of asbestus, c. Having fastened the compound core and the asbestos onto the canvas, I next coat the surface (shown in Fig. l) with a solution of india-rubber, and I then roll the canvas with its superposed asbestus around the core, after which the compound body may be pressed into any convenient sectional form. (See Figs. 3, 4, and 7.)

Figs. 5 and 6 are corresponding views to Figs. 1 and 2, showing the mode of making the packing with a number of strips, 0, of asbestus sheet, the process of manufacture being the same.

Figs. 8 and 9 show how the packing is made with diagonal strips of asbestus sheet 0, and Figs. 10 and 11 show the packing made with plaited or woven vegetable fiber a in lieu of canvas. b is the core as before, and c the other asbestus sheet.

What I claim is The packing described, having a core of rubber, around which are wound layers of canvas and asbestus cemented with rubber, as herein specified.

ALEXANDER DUDGEON.

Witnesses W. LLOYD WISE,

Patent Agent, London. H. T. VVALKER,

Ohamdos Chambers, Adelphi, W. G. 

